tom69z wrote:fyi - there is NO radiant heat given off from an 8" thick concrete poured wall, or from a concrete floor, it just sucks it in and dissipates it into the outside soil. the bedroom floor is the warmest because thats where the oil furnace sits, but we keep the house at 72 in the winter, it burns about 160 gallons a month during the coldest months.
Actually there is radiant heat given off. I read some of dan houlahans books, and he talked about the radiant heat systems in concrete slabs in levitt town. Uninsulated slabs mind you. he said in the middle of winter the power could go out and the house would stay warm for days with the heat coming off the slab. I will also say I can feel the heat from our block walls for a couple of days after the stove goes out.